Mangle



J. NORRIE.

MANGLE.

APPLICATION man MAR. 5. 1921.

1,415,262 Patented May 9, 1922. A

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MANGLE.

APPLICATION FILED MAR. 5. 1921.

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MANGLE.

Specification of Letters Patent. y

Application filed March 5, 1921. Serial No. 449,748.

T0 all whom it may concer/n Be it known that I, JAMES NORME, a citizen of the United States, residing at Quincy, county of Norfolk, Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Mangles of which the following is a specification, reference being had therein to the accompanying drawings.

-The invention relates to anew and useful improvement in mangles for fiat goods. The invention relates to a mangle in which two aprons .are employed between which the article to be mangled is passed around a roll to press the article. One object of the invention is to provide tension mechanism whereby the aprons are put under tension during the travel around the said roll. Another object of the invention is to provide a series of tension pressure rolls which are arranged in series around a central main roll and'which engage one of the endless aprons to give elastic pressure to said apron to furnish a uniform tension on the said outer apron and thereby to press the article between the two aprons as they pass around the central roll.

The invention will be fully understood from the following description when taken' in connection with the accompanying drawings, and the novel features thereof will be pointed out and clearly defined. in the claims at the close lof this specification.

In the drawings, Fig. 1 is a vertical section of a machine embodying the invention,

some of the parts being shown in diagram..

Fig. 2 is a detail on an enlarged scale of a part of the machine shown in Fig. 1.

Fig. 3 is a section on line 3 3 of Fig. 1.

Referring now to the drawings, 1 represents a main roll mounted on a shaft 2 which is journaled in suitable bearings 5 in the frame members' 3-3. The shaft 2 is rotated by any suitable means, the method shown being by means of a pulley 4 mounted on said shaft. An endless belt 6 passes around the said roll 1 and around an idler roll 7. Preferably also there is provided a guide roll 8 for the upper run of the apron intermediate between the idler roll 7 and the main roll 1. v

A plurality of secondary or pressure rolls 9, preferably four in number, are vdisposed at equal distances around the periphery of the main or central ,roll 1. Each of these pressure rolls is mounted in movable bearings which are maintained under elastic pressure radially toward the main roll 1. An endless apron 10 passes over each one of said rolls 9 and around the inner roll 1 outside of the apron 6.

The preferred form of movable mount for each of the rolls 9 is as followsz-Fach roll is mounted on a shaft 11 which is journalled in a 4block 12, said block 12 being made fast to a holder 13 which is slidably mounted on the rods 1414. Each pair of rods 14-14pass through the machine as shown in Figure 1, and have mounted upon them similar block supporting holders 13 at two opposite sides of the main roll 1.

`Eachblock 12 is clamped to its support on the holder 13 by a yoke 15 which is held in place by nuts 16 screwed onto the ends of the yoke 15, as shown in Figures 1 and 2.

A'coiled spring 17 is mounted on each of the two rods 14-14, one endof said spring vbeing seated on the bottom of the holder 13, the other end .bearing against a washer 18 which is held against' the upper end of the spring by a nut 19 screwed onto the rod 14, thus holding the spring with tension against the holder 13.

The rods 14 pass loosely through slots in a flange 20 of a bracket 21 made 4fast to the members 3 which form part of the frame of the machine.

Two of the holders 13 are mounted on each pair of rods 14, 14 on diametrically opposite sides ofthe main roll 1. The nuts 19 and washers 18 form stops for the outer ends of the springs, and the radially outward movement of the secondary roll and its holderis limited by the compressibility of the springs. Although the rods 14 pass loosely through the flanges 20 of the brackets, the said rods can slide only a limited distance, because if they tend to slide for 'instance radially outward, as viewed in Figure 2, that will pull the holder and roller which are diametrically opposite with greater pressure toward the main roll, and therefore allow only such eX- tent of sliding movement of the rods 14 as permitted by the contraction of the opposite pair of springs.

rlhemain roll l is positively driven by the pulley 4 as already described. The secondary rolls 14 are frictionally driven through the friction of the apron 6 with the apron 10 and the secondary rolls 9. Additional tension is given to the apron 10 to take up any possible slack by a weighted roller 23 which Patented May 9, 1922. I

rests upon the under run of the apron l0 an'd is mounted upon a lever Q4 pivoted at 25 to the traine of the machine, so that the weighted roller 23 always exerts pressure on the apron.

The articles enter the machine on the horizontal upper run otl the apron (S between the roll Tand the guide roll 8. They come out ot' the machine on the return ofthe under run ot the apron aft r passing the 'a =t ot the secondary rolls 9, that is the lower letthand one as viewed in Figure 1, and at that point the apron and the apron l() diverge from each other. As the article passes from between the two aprons it will fall downward, and a discharge carrier belt 26 is provided onto which the article will tall as it drops from between the two aprons. This discharge carrier is preferably in the form of an endless carrier .mounted on the two rolls 273-28. and this is driven by means of a belt 2S) which passes around a pulley 30 carried on the end of the shaft on which the last one ot' the secondary rolls 9 is mounted and also passes around a pulley 31 on the shaft ot' the roll 28.

In order to prevent the article from clinging to the under Surface of the apron 6 after it comes out from the last secondary roll 9, I preferably provide a rotary brush 32 just beneath the apron` and which rotates in the 'reverse direction from the path of travel of the apron so as to engage the article and strip it from the apron, if it has any tendency to cling thereto, and cause it to drop onto the discharge carrier.

lVhat I claim is- 1. A mangle having a main roll, a plurality of pressure rolls grouped around said main roll, anv endless apron which runs around said main roll and around a supporting roll at a distance from said main roll. an endless apron which runs around all ot' said pressure rolls and also runs around the said main roll in superposed re-v lation to the saidrst apron, two of said pressure rolls being on diametrically opposite sides of the main roll, two sets of springs which respectively maintain said pressure rolls against the main roll, exerting their pressure in diametrically opposite directions, slidable lmounts for said pressure rolls, whereby said mounts are capable of being moved a-limited distance at right angles to the axis of the main roll, and means whereby when the said slidable mount'is moved in one direction one set of springs vwill have their tension increased and the other set of springs will have their tension correspondingly decreased..

2. A mangle having a main roll, a plurality of pressure rolls grouped around said main roll, an endless apron which runs around said main roll and around a supporting member, an endless apron which runs around all of said pressure rolls and also runs around the said main roll in super posed relation to the Said first apron to press the articles between said aprons, two of said pressure rolls being on'diametrically opposite sides of the main roll, bearings for each of Said pressure rolls mounted on radially movable holders which are di ametrically opposite each other, said holders being mounted on rods which pass loosely through said holders, the two diametrically opposite holders being mounted on the same rods, Said rods being longitudinally slidable for a limited distance independently of the movement of the holders on the rods, means for limiting the sliding movement of the rods, two springs coiled around each rod on opposite sides of the axis of the main roll, one end of each spring abutting against a stop made fast to the rod, the other end of each of said springs being seated on one of said holders thereby maintaining the pressure rolls with a yielding pressure against diametrically opposite sides of the main roll, the sliding movement of the rods in either direction compressing one set of springs to increase their pressure and allowing the opposite pair of springs to expand thereby diminishing their pressure.

ln testimony whereof I afiix my signature.

J AMES NORRIE. 

